Screen drum for viners



F. HAMACHEK SCREEN DRUM FOR VINERS APPLICATION FILED APRJ2, 1920.

Patented Feb. 7, 1922.

3 SlHEE/TS- SHEET I ATTOQNEY.-

WITNESSES F. HAMACHEK.

SCREEN DRUM FOR VINERS.

APPLICATJON FILED A-PILZ. 1920.

1 1 4 Patented Feb. 7, 1922.

3 SHEETS-SHEET 2.

FIG. 5

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WITNESSES. INVENTOQ ATTORNEY F. HAMACHEK. SCREEN DRUM FOR VIANERS. APPLICATION nuzo APR. 2. 1920.

1,405,914. Patented Feb. 7, 1922.

3 SHEETS-S HEET 3- 4.0- m, NVEINTOR ATi'OPNE'Y UNITED STATES FRANK HAMACHEK, OF KE'WAUNEE, WISCONSIN.

SCREEN DRUM non vmnns.

Application filed April 2,

To all whom it may concern Be it known that I, FRANK HAMACHEK, a citizen of the United States, and resident of Kewaunee, in the county of Kewaunee and State of Wisconsin, have invented new and useful Improvements in Screen Drums for Viners, of which the following is'a description, reference being had to the accompanying drawings, which are a part of this specification.

This invention has for its object to provide a screen drum for pea separators or viners which will afford spaces at the edge of the lifting ribs for the passage of peas in order to more efiiciently drain the peas from the pockets formed between the lifting ribs and the screen frames.

Another object of the invention is to improve the construction of the screen frames and the means for securing them in place.

Another object of the invention is to provide guards for the ends of the lifting ribs on the side thereof against which the vines are slashed and adapted to present an inclined surface against which the pea vines may be givena glancing blow without in juring the peas.

Another object of the invention is to improve the construction of the screen drum generally.

VVit-h the above and other objects in view the invention consists in the screen drum for viners as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters of reference indicate the same parts in different views, Fig. l-is a transverse sectional view of a screen drum for viners constructed in accordance with this invention, the direction ofthe view being toward the front end of the drum;

Fig. 2 is an enlarged detail view of one of the lifting ribs thereof;

Fig. 3 is a longitudinal sectional view at the front end of the drum;

Fig. 4 is a view similar to Fig. 2, showing the manner of connecting the tie rods to the lifting ribs midway between the ends of the drum;

Fig. 5 is a detail view of the end of a lifting rib withits guard and cap, as viewed rom the exterior of the drum;

Fig. 6 is a view of one of the screen frames showing the braces extending there-across;

Fig. 7 is a perspective view showing the 1920. Serial No. 370,702.

construction of the joints of the screen frame and its braces;

Fig. 8 is a view similar to Fig. 5 as viewed from the interior of the drum, with portions of the screen frames in place to show the gain in the number of openings for the escape of peas at the end of the liftlng rib;

Fig. 9 is a view similar to Fig. 2, looking in the opposite direction and with the cap IQIgOVGd and the ring shown in dotted lines; an

Fig. 10 is a View similar to Fig. 4 through one of the clamps which clamp the screen frames to the lifting ribs at intervals.

Specification of Letters Patent. Patented Feb. 7, 1922.

In these drawings, 15 indicates the usual supporting framework forming a. housing in which the screen drum is mounted to rotate in the usual manner. The drum consists of end rings 16 connected by radially positioned lifting ribs 17 and mounted on rollers 18 with rectangular screen frames 19 secured to the lifting ribs and extending from one ring to the other.

At the open ends of the screen drum are stationary end walls 20 provided with flanged rings 21 to loosely fit within inwardly turned flanges 22 on the rings 16 to prevent the escape of material from the drum at such places.

The usual inner drum 23 with its hulling beatersfl l is mounted in suitable bearings 25 on the frame and is driven by suitable means in the same direction as the screen drum but at a higher speed. A feed opening 26 is formed in the end wall 20 at the front end of the machine beneath the inner drum and it is through this opening that the pea vines as harvested from the fields are fed.

The lifting ribs 17 are preferably of the fingered type covered by United States Letters Patent No. 1,153,304, dated September 14:, 1915, and the longitudinalmemberthereof is seated in sockets 27 formed in brackets 28 which have flangesg29 let into the rings 16 and are bolted to said rings by means of bolts 80. Each of the fingersof the lifting rib is bolted to the longitudinal member by a bolt 31 extending lengthwise through the finger, with its nut countersunk in the end of the finger and instead of the ends of'the fingers being connected by a longitudinally extending fillet strip, as before, these ends are beveled fit directly against the screening surface of the screen frames 19 and the meeting edges of the adjacent screen frames are clamped together and to the lifting ribs at four or more points shown in Fig. 6 in the manner illustrated in V Fig. 10, At these clamping points the finger of the-lifting rib is somewhat shorter and is seated in the metal bearing plate 32, the bolt 31 of this finger being somewhat longer than the others and having a nut 33 threaded thereon to clamp the bearing plate on the finger and then passing between the edges of the adjacent screen frames. A V-shaped clamping member 341 surrounds the end of bolt 31 and is forced against the edges of the adjacent screen frames by a nut 35, thus forcing the screen frames toward the bearing plate 32 and; clamping them firmly in place. Midway. between the ends of the screen drum, tie rods 36 connect the lifting ribs together by fitting on their bolts 31 and this serves to .secured together, the latter having notches.

form a band or hoop around the drum holdingthe lifting ribs in place. i

The screen frame has its longitudinal edges formed by a pair of strips 37 and 38 formed therein on its meeting face to form mortise openings to receive the tenon projections. on the ends of the brace rods 39 which cross the frame at intervals. The

open notches at the ends of the strip 38 receive the headed tenons on the ends of the end pieces 40 to firmly lock the .parts together in the manner shown in Fig.7. The face. of each frame is covered with a screening material 41, which is preferably woven wire cloth, as shown, and it is this face that bears against the beveled ends of the fingers of the lifting rib. The strips 37 of the screen frames, which are somewhat wider than the strips 38, are mitered to fit together in'the manner shown in Figs. 2 and 4t and because of the strengthening of the frame by the brace strips 39 these strips 37 may be made narrow enough so that their aggreq gate widthwhen assembled in abutment with each other is less than the width of the lifting rib. Thisis important as it enables the presence of unobstructed screen openings close to the bottoms of the pockets formed between the lifting ribs and the screen surface, so that the loose peas may pass through and be-drained from said pockets. The absence of the fillet strip and the narrowing of the mostuseful, at the bottoms of the pockets screen frames to less than the width of the lifting ribs serves-to increase the number of availableopemngs m the screen frames and therefore increase the sifting capacity of the-screen drum desides locating such additional screen openings Where'they will be i above-mentioned. The openings in this 10- cation further serve to prevent the accumulation in these pockets of; leaves and dirt which tend to gather-there, especially during the wet weather, making it necessary to stop the machine for cleaning. With the additional openings there is a tendency for selfcleaning by the discharge of leaves and dirt through them, both by the action of gravity and by the slashing action of the vines beating against them, for when vines hang from the rapidly rotating heaters and strike against the longitudinal bar of the lifting rib they may sweep between the fingers and machine against the vines being slashed against a flat surface, probably due to the fact that the tenderest peas are promptly opened and if injured by the slashing such injury takes place at the front end of the drum. It is therefore found desirable to provide guards .for the ends of the lifting ribs at the front end of the machine in additionto the caps 42 which cover the ends ofthe lifting ribs and form inclined surfaces from thelends of the ribs to the ring on the slashing side of the ribs and at the ends thereof; Such guards consist of metal plates 43, preferably castlngs, secured to the inner face of the longitudinal member of the lifting rib'and.

also to the inner face of the ring 16 beyond 7 the end of cap 12 and conforming to the inclined edge of said cap and extending down the vertical face of the ring and therear face of the lifting rib and curved between these supports to form an inclined sweeping fillet web occupying a triangle between the lifting rib and the ring when viewed inplan.

in 3. if the vines slashed immediately upon their entry into thesifting drum by overhanging from the hulling beatci's the inclined guards as will prevent injury to the tender peas by deflecting the blows thereof A against the'flat surfaces of the lifting ribs. In operation, the screendrum performs the usual functions of lifting the vine s as they are fed through the opening 26 andv dropping them in the path of the more raping glancing blows thereon to open the pods,

and preventing slashing '120 idly rotating beaters, which, besides deliver- I occasionally slash the vines overhanging therefrom against the lifting ribs where again they receive glancing blows againstv the inclined surfaces of the lifting ribs to open other pods. Theliberated peas, the

loose leaves and dirt slide down" the inclined screen surface and the peas and dirt pass through the openings of the screen and upon a separating apron therebeneath. By reason of the screen openings provided near the bottoms of the pockets formed between the lifting ribs and the walls of the drum, the peas are given an opportunity to pass out of such pockets and if they fail in doing so the openings between the fingers of the lifting ribs permit them to pass through the lifting ribs before they are raised high enough to drop on the beaters. Notwithstanding the fact that the screen frames have narrow side members to afford these additional openings near the bottoms of the pockets, they are strong enough to hold the screen surface in place due to the construction of the screen frames with their cross braces and the secure manner of clamping them to the lifting ribs. The lifting ribs 1n turn are tied in place by the tie rods 36 to preserve the proper positioning thereof midway between the brackets 28 which secure them to the end rings. Furthermore, the operationof guards 43 serves to prevent the injury to the more tender peas by avoiding a severe slashing action thereon when they enter the drum. While the guards 43 are shown as separate from the caps 42 it is obvious that they may be made integral therewith as a single casting.

What I claim as new and desire to secure by Letters Patent is: c

1. In a screen drum for viners, lifting ribs, and screen frames secured to the lifting ribs and provided with screens having screen openings extending within the space between the planes of the opposite sides of the lifting ribs.

2. In a screen drum for viners, fingered lifting ribs, and screen frames secured to the lifting ribs and provided with screens having screen openings extending within the space between the fingers of the lifting ribs.

3. In a screen drum for viners, fingered lifting ribs, and screen frames bearing on the ends of the fingers of the lifting ribs and provided with screens having screen openings extending within the space between the planes of opposite sides of the lifting ribs and between the fingers of the lifting ribs to drain the pockets formed between the lifting,

ribs and the screens.

4. In a screen drum for viners, suitably mounted end rings, lifting ribs connecting the end rings, tie rods connecting the outer edges of the lifting ribs, and screen frames mounted on the lifting ribs.

5. In a screen drum for viners, a screen frame comprising end pieces and logintudinal side pieces, said side pieces being formed of a pair of strips secured together and one strip being notched along its meeting .face with the other, the end pieces fitting in the end notches, and brace strips tenoned in the intermediate notches and extending across the screen frame.

6. In a screen drum for viners, fingered lifting ribs, screen frames miter-ed together and fitting on the ends of the fingers of the lifting ribs, bearing lates recessed to receive the ends of certaln of the fingers of the lifting ribs and bearing on the screen frames, bolts passing through said fingers of the lifting ribs and through the bearing plates and having nuts threaded thereon engaging the bearing plates, clamping members fitting on said bolts and engaging the screen frames, and nuts threaded on the bolts and bearing on the clamping members for causing the screen frames to be clamped between the clamping members and the bearing plates.

7. In a pea viner, a screen drum having lifting ribs, rotary beaters within the drum, and blow-deflecting means at the rear of the lifting ribs to prevent the injury to peas when slashed thereagainst by the boaters.

8. In a pea viner, a rotary screen drum having lifting ribs, hulling beaters within the drum, and inclined blow-deflecting means at the ends of the lifting ribs at the feed end of the drum for deflecting the slashing blows of vines when overhanging the beaters.

9. In a pea viner, a screen drum comprising end rings, lifting ribs and screen frames, hulling beaters within the drum, and blowdeflecting guards consisting of inclined curved plates between the lifting ribs and the ring at the feed end of the drum to deflect the slashing blows of vines overhanging the hulling beaters.

In testimony whereof, I afiix my signature, in presence of two witnesses.

FRANK HAMACHEK.

Witnesses:

F. HAMACHEK, J r., E. W. CLAssoN. 

